Replacement for CISCO1840: Drop-In Alternatives We Stock
Looking for a replacement for the CISCO1840 (CISCO1840 - Cisco 1840 Dual-Port 2 x 10/100 Managed Integrated Services Router)? Pro Disk Network ships Cisco drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the CISCO1840
| SKU | CISCO1840 |
|---|---|
| Product | CISCO1840 - Cisco 1840 Dual-Port 2 x 10/100 Managed Integrated Services Router |
| Stock status | In Stock |
| Detail page | View CISCO1840 › |
Drop-in replacements for CISCO1840
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
Cisco C1861-SRST-F/K9 1861 8-Port 8 x 10/100/ PoE Fast Ethernet Integrated Services Router
SKU: C1861-SRST-F-K9
Price: $326.14
Cisco ISR4321-SEC/K9 ISR 2-Port 4-Slot 10/100/1000Base-T Gigabit Ethernet Integrated Service Router
SKU: ISR4321-SEC-K9
Price: $404.22
C891F-K9 - Cisco 891F 8-Port 10/100/1000Base-T / TX AC Integrated Services Router
SKU: C891F-K9
Price: $3,345.55
WS-C2950G-24-EI - Cisco Catalyst 2950G 24-Port 24 x 10/100Base-TX + 2 x uplink Port Layer 2 Managed Fast Ethernet Network Switch
SKU: WS-C2950G-24-EI
Price: $213.68
WS-C2960CPD-8PT-L - Cisco Catalyst 8-Port 10/100/1000 Managed Gigabit Ethernet Switch
SKU: WS-C2960CPD-8PT-L
Price: $103.95
WS-X6548-GE-TX - Cisco Catalyst 6500 48-Port 48 x 10/100/1000 Base-T Layer 3 Managed Fabric-Enabled Module
SKU: WS-X6548-GE-TX
Price: $125.80
WS-X6548 - Cisco Catalyst 6500 48-Port 48 x 10/100/1000 Base-T Layer 3 Managed Fabric-Enabled Module
SKU: WS-X6548
Price: $140.36
WS-X4920-GB-RJ45 - Cisco Catalyst 4900M 20-port 10/100/1000 Managed Module
SKU: WS-X4920-GB-RJ45
Price: $263.16
Cisco Catalyst WS-X6548-GE-45AF 6500 48-Port 48 x 10/100/1000 Base-T Layer 3 Managed Fabric-Enabled Module Spare
SKU: WS-X6548-GE-45AF
Price: $292.95
WS-X6548-RJ-45 - Cisco Catalyst 6500 48-Port 48 x 10/100/1000 Base-T Layer 3 Managed Fabric-Enabled Module
SKU: WS-X6548-RJ-45
Price: $322.29
WS-C2960S-48TS-L - Cisco Catalyst 2960S-48TD-L 48-Port 48 x 10/100/1000 + 2 x 10 Gigabit SFP+ PoE Layer 2 Managed 1U Rack-mountable Stackable Gigabit Ethernet Network Switch
SKU: WS-C2960S-48TS-L
Price: $324.21
WS-C2960C-12PC-L - Cisco Catalyst 12-Port 10/100 Managed Rack-Mountable Fast Ethernet Switch
SKU: WS-C2960C-12PC-L
Price: $327.63
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.